diff --git a/3.Integration Test Plan Document/ITPD.lyx b/3.Integration Test Plan Document/ITPD.lyx
index b687e99..edc217d 100644
--- a/3.Integration Test Plan Document/ITPD.lyx	
+++ b/3.Integration Test Plan Document/ITPD.lyx	
@@ -7108,10 +7108,14 @@ The user data are correctly inserted in the database.
 Events Handler
 \end_layout
 
+\begin_layout Paragraph
+Notification Manager
+\end_layout
+
 \begin_layout Standard
 Main functions implemented by the
 \series bold
- Events Handler
+ Notification Manager
 \series default
 :
 \begin_inset VSpace smallskip
@@ -7133,7 +7137,158 @@ Main functions implemented by the
 \begin_layout Plain Layout
 
 \family typewriter
-register
+notify(User, Notification)
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row>
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+\begin_inset Tabular
+<lyxtabular version="3" rows="4" columns="2">
+<features tabularvalignment="middle">
+<column alignment="left" valignment="top">
+<column alignment="left" valignment="top" width="44col%">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\series bold
+Description
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+This is a cool description
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="left" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Input
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Effect
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A null parameter
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A NullArgumentException is raised.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A non-null user
+\end_layout
+
+\end_inset
+</cell>
+<cell mroffset="0.5pt" alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+The user data are correctly inserted in the database.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Paragraph
+Payment Manager
+\end_layout
+
+\begin_layout Standard
+Main functions implemented by the
+\series bold
+ Payment Manager
+\series default
+:
+\end_layout
+
+\begin_layout Standard
+\begin_inset VSpace smallskip
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\align center
+\begin_inset Tabular
+<lyxtabular version="3" rows="2" columns="1">
+<features tabularvalignment="middle" tabularwidth="50page%">
+<column alignment="center" valignment="top" width="0pt">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\family typewriter
+calculateReservationFees(Reservation) 
 \end_layout
 
 \end_inset
@@ -7272,7 +7427,424 @@ The user data are correctly inserted in the database.
 \begin_layout Plain Layout
 
 \family typewriter
-register
+calculateRentFees(Rent) 
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row>
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+\begin_inset Tabular
+<lyxtabular version="3" rows="4" columns="2">
+<features tabularvalignment="middle">
+<column alignment="left" valignment="top">
+<column alignment="left" valignment="top" width="44col%">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\series bold
+Description
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+This is a cool description
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="left" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Input
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Effect
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A null parameter
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A NullArgumentException is raised.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A non-null user
+\end_layout
+
+\end_inset
+</cell>
+<cell mroffset="0.5pt" alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+The user data are correctly inserted in the database.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\begin_inset VSpace smallskip
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\align center
+\begin_inset Tabular
+<lyxtabular version="3" rows="2" columns="1">
+<features tabularvalignment="middle" tabularwidth="50page%">
+<column alignment="center" valignment="top" width="0pt">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\family typewriter
+calculateRentDiscount(Rent) 
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row>
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+\begin_inset Tabular
+<lyxtabular version="3" rows="4" columns="2">
+<features tabularvalignment="middle">
+<column alignment="left" valignment="top">
+<column alignment="left" valignment="top" width="44col%">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\series bold
+Description
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+This is a cool description
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="left" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Input
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Effect
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A null parameter
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A NullArgumentException is raised.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A non-null user
+\end_layout
+
+\end_inset
+</cell>
+<cell mroffset="0.5pt" alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+The user data are correctly inserted in the database.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\begin_inset VSpace smallskip
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\align center
+\begin_inset Tabular
+<lyxtabular version="3" rows="2" columns="1">
+<features tabularvalignment="middle" tabularwidth="50page%">
+<column alignment="center" valignment="top" width="0pt">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\family typewriter
+calculateAdditionalFee(Rent) 
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row>
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+\begin_inset Tabular
+<lyxtabular version="3" rows="4" columns="2">
+<features tabularvalignment="middle">
+<column alignment="left" valignment="top">
+<column alignment="left" valignment="top" width="44col%">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\series bold
+Description
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+This is a cool description
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="left" valignment="top" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Input
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\shape slanted
+Effect
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A null parameter
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A NullArgumentException is raised.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topspace="1pt" bottomspace="2pt">
+<cell alignment="left" valignment="top" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+A non-null user
+\end_layout
+
+\end_inset
+</cell>
+<cell mroffset="0.5pt" alignment="left" valignment="top" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+The user data are correctly inserted in the database.
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\begin_inset VSpace smallskip
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\align center
+\begin_inset Tabular
+<lyxtabular version="3" rows="2" columns="1">
+<features tabularvalignment="middle" tabularwidth="50page%">
+<column alignment="center" valignment="top" width="0pt">
+<row topspace="1pt" bottomspace="1pt">
+<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Plain Layout
+
+\family typewriter
+contactPaymentService()
 \end_layout
 
 \end_inset